| 兰渝铁路关子岭隧道施工方法的数值分析 |
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| 引用本文： | 高峰,尹小宝.兰渝铁路关子岭隧道施工方法的数值分析[J].现代隧道技术,2011,48(2). |
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| 作者姓名： | 高峰 尹小宝 |
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| 作者单位： | 1. 重庆交通大学,重庆,400074
2. 重庆交通大学研究生部,重庆,400074 |
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| 基金项目： | 铁道部科技研究开发计划项目 |
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| 摘 要： | 以兰渝铁路关子岭隧道工程为依托,针对大断面隧道的施工方法进行数值模拟,分别对台阶式、双侧壁导洞式、全断面开挖,以及导洞超前扩挖四种开挖方式进行计算,对比应力、位移和塑性区,得到较优的开挖方案.计算结果表明,双侧壁导洞式与导洞扩挖式开挖位移变化幅度较小,没有出现拉应力,塑性区对称分布,施工难度较小,且面积较小,优于其他方案.
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| 关 键 词： | 铁路隧道 数值模拟 有限元分析 |
Numerical Analysis for the Construction of Guanziling Tunnel on Lanzhou-Chongqing Railway |
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| Gao Feng,Yin Xiaobao.Numerical Analysis for the Construction of Guanziling Tunnel on Lanzhou-Chongqing Railway[J].Modern Tunnelling Technology,2011,48(2). |
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| Authors: | Gao Feng Yin Xiaobao |
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| Institution: | Gao Feng1 Yin Xiaobao2(1 Chongqing Communication University,Chongqing 400074,2 Graduate Facaulty of Chongqing Communication University,Chongqing 400074) |
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| Abstract: | Taking Guanziling tunnel on Lanzhou-Chongqing railway as the background,numerical simulation was carried out for the construction of large-section tunnel,calculations were performed for the bench method,double side-headings,full-face excavation and enlarged excavation with advanace heading respectively.Better excavation options were obtained after the comparison of stresses,displacements and plastic zons from all options.Calculated results indicated that the options of double side-headings and enlarged exca... |
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| Keywords: | Railway tunnel Numerical simulation Finite element analysis |
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